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321/321H Pipe Fittings

SS 321 PIPE BENDS, ELBOWS, 321 FLANGES MANUFACTURER IN INDIA ASTM A403, ASTM A182, ASTM A240321/321H PIPE FITTINGS, SS 321 FLANGES SUPPLIER
STAINLESS STEEL 321 PIPE BENDS, SS 321 ELBOW, SS 321 TEE, SS 321 REDUCER, STUB END

Stainless SteelTradenameUNS no.Werkstoff No.Density (g/cm3)
321321 StainlessS321001.45417.92
321H321H StainlessS321091.48787.92

Range of 321/321H Pipe Fittings

Eka Pipe Fittings is a prominent producer and supplier of buttweld pipe fittings and flanges in the stainless steel 321 (1.4541) and 321H (1.4878) grades. A comprehensive selection of stainless steel 321/321H pipe fittings, including SS 321 reducers, elbows, tees, crosses, end caps, stub ends and pipe bends, are available from Eka Pipe Fittings. The production of stainless steel 321 and 321H pipe fittings complies with ANSI B16.9 / 16.28/MSS SP-43 / Welding Bevel Standards ANSI B 16.25, as well as ASTM A-403.

Our area of expertise lies in producing and distributing SS 321 pipe bends in both conventional and non-standard sizes, with bending radiuses ranging from 1D to 10D or any other bespoke value. We provide a variety of standard size and type SS 321 pipe fittings, flanges, and bends ex-stock. Our area of expertise lies in producing and distributing SS 321 big diameter fabricated pipes, SS 321 reducers, SS 321 tees, and large size fabricated elbows that have undergone 100% radiography testing.

Common austenitic 18/8 stainless steel alloy grade 321 also contains titanium. Similar to Type 304 stainless steel, Type 321 stainless steel has at least five times as much titanium added to it. Their primary distinction is that during welding, the titanium addition lessens carbide precipitation.

Commonly used in high temperature conditions up to 900° C is stainless steel 321 grade. Because of its strong welding and forming qualities, 321 stainless steel is frequently utilised in operating temperatures higher than 500° C. The higher carbon version of the 321 grade, known as stainless steel 321H or UNS S32109, offers stronger performance at higher temperatures.

In addition to our current production range of SS 321 flanges and buttweld fittings, Eka Pipe Fittings also stocks and sells the entire spectrum of SS 321 pipes. Stainless steel 321 seamless pipes can be machined or built to match your specific piping needs, in addition to being supplied in length sizes that can be cut to fit.

Key Properties of Stainless Steel 321 Pipe Fittings, SS 321 Flanges

  • Excellent resistance to oxidation
  • High resistance to corrosion
  • Good creep strength
  • Can be readily formed and drawn
  • High resistance to organic chemicals and inorganic chemicals
  • Strong resistance to nitric acids and moderate resistance sulfur acids
  • Improved resistance to intergranular corrosion

Common Applications - SS 321 Pipe Fittings and 321 Flanges

  • Oil refinery equipment
  • Pressure Vessels
  • Industrial Boilers
  • Chemical and pharmaceutical equipment
  • Chemical process heat exchangers
  • Petrochemical refineries

SS 321 Pipe Fittings Production Range

SpecificationASTM A182/A403 & ASME SA182 / SA403
TypeSeamless / Welded / Fabricated
Variants321, 321H
Bending RadiusR=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Range1/2 “NB to 48 “NB in Sch 10s, 40s, 80s, 160s, XXS.
DimensionsANSI/ASME B16.9, B16.28, MSS-SP-43.

Buttweld Stainless Steel 321 Pipe Fittings

Seamless / Welded 100% Radiography Tested

Products Size
SS 321 Elbows – Long RadiusSS 321 Stub Ends 
SS 321 Elbows – Short RadiusSS 321 CrossesSizes 1/2″ 48″
SS 321 Reducing ElbowsSS 321 Reducing Crosses 
SS 321 45° ElbowsSS 321 180° LR Return Bends 
SS 321 TeesSS 321 180° SR Return Bends 
SS 321 Fabricated TeesSS 321 Pipe Bends / Piggable Bends 
SS 321 ReducersSS 321 Couplings 
SS 321 Concentric ReducersSS 321 Pipe Nipples 
SS 321 Eccentric ReducersSS 321 Forged/Plate Cut Rings 
SS 321 3D ElbowSS 321 End Caps 
SS 321 5D ElbowSS 321 Forged / Plate Circles 

High Pressure Forged 321 Pipe Fittings

Threaded and Socket Weld Pipe Fittings

Products Size
SS 321 90° ElbowsSS 321 Couplings 
SS 321 45° ElbowsSS 321 ReducersSizes 1/8″ – 4″
SS 321 Street ElbowsSS 321 InsertsPressure Ratings
SS 321 TeesSS 321 Caps2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS
SS 321 CrossesSS 321 Unions 

Stainless Steel 321/321H Flanges

Forged and Plate Flanges

SpecificationASTM A182/A240 & ASME SA182 / SA240
Grade321, 321H
StandardANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
Size1/8″ to 36″
DimensionsANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Class / Pressure150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Product Size
SS 321 Slip-On FlangesSS 321 Threaded Flanges 
SS 321 Weld Neck FlangesSS 321 Socket Weld Flanges1/8″-36″
SS 321 Blind FlangesSS 321 Reducing FlangesRaised Face or Flat Face
SS 321 Lap Joint FlangesSS 321 Plate Flanges